Door mounting for cooking stoves or the like



G. KLEIN Nov. 12, 1946..

' DOOR MOUNTING FOR COOKING STOVES OR THE LIKE 2 ShetS-Sheet 1 FiledJune 8, 1945 INVEN TOR. Qua- V K 1.5! BY ATTOZA/E Y.

Nov. "12, 1946. KL 2,410,980

DOOR MOUNTING FOR COOKING STOVES OR THE LIKE Filed June 8, 1945 2Sheets-Sheet 2 INVEN TOR. yUSTAV KLEIIJ ATIOZIJEY Patented Nov. 12,1946

UNITED STATES noon MOUNTING FOR COOKING s'rovEs on THE LIKE GustavKlein; Melrose Park;

Caloric Gas- Stove. Works;- Philadelphia,

-Pa., assignor: to

Application June 8,1945, Serial No. 598,221"

door against the frame defining the oven door.

opening; which will notbe subjected. to intense heat and, hence, will.not deterioratewhile in use; which is readily accessible-torreplacement-when necessary, and which will beinexpensive to manufactureand install.

These and other objects are efiected by my in-' ventionas will be.apparent vfrom thefollowingt description and the accompanyingdrawings.forming a part of this application and in which:

Fig. 1' isla fragmentary, front elevational view of a cooking stoveprovided with. oven door mounting means embodying my invention;

Fig, 2 isa similar side elevational view of the. stove shown in Fig. 1;

Fig. 3 is a fragmentary, .front elevational view showing .theoven .doorslightly opened;

Fig. 4 is a side elevational-view of Fig. 3;

Fig. 5 is a view, similar to Fig- 3, showing the ovendoor openedsomewhat more than it is in Fig. 3;

Fig. 6 is a side elevational view of Fig. 4;

Fig. 7 is a view similar to Fig, 3, showing the door fullyopen;

Fig. '8 is asideelevational view oftFig. 7; and Fig. 9 is an enlarged,fragmentary section on line IX-IX of Fig. ,2;

Referringto Fig; 1 of the. drawihgsjxlihdesig+ nate's: the; supportingframeworkior "housing; of a;

cooking stove; .suchzas anzordinarygas or electric: range: The:framework'zmayrbe -4 oftanyzdesired; construction; and :certain walls:thereof rare;

insulated; as at l2; (See :Fig; 9:) The'framefworkixl B :defines alower: broiler compartment?! 4 and' art upper 'oven compartmentx l6;therfront? access openings of which'are; closed: by. doorsJIB;

2.1 lating rnechanisrnslocated at the opposite sides ofthe door: Eachofthese mechanisms'com-i prises a .levery22; which, at its-outerend: is:securedto'or carries an angle 24'.(see Fig."9)'which;. 5 in. turn, isspot we1dedorotherwisesecured'to. the I door at 26. The. lever '22."also includes an' angular. portion 28lwhich terminates: in a; hook 38;adapted; when the door. is fully opened; .ltO' engage a.st0p '32 tolimit movementofthe door? in opening directionibeyond'the positionshownin Fig.8.

A bent link 34 has one end-.there'ofpivoted to theleVer-ZZ, as atSfiIThe other end of the bent link' 344s pivoted" at 38 to the upper end ofalinkerhanger 40. The bent'link 34 isrsoarranged'jthat, when the door isopened to,. and beyond, the positionshown inFig. 4;.the bent linkisengagedjb'y a lug42carriedjbythe lever.- 22.."so thatlthelever'22fand,the b'entlink 34*wil1' movajointlygfromthe p ositionfshown in Fig.7 4

to thatl-sh'own in.F.ig..8. Thigjmovement of the bent link pullsupwardly -on the hanger! when the...door.- is movecL in openingdirection andlvice' versa.

The upwardlmovement of; the hangers All on theopposit sides ofthe oven.door is resisted. by, ahorizontally-sdisposed spring .44 which] islocated below the. front I of the.,broiler compart-. ment; In. this.position,.the.springr is not sub-.- jec-tedfltoany heat .sinceit ,issurrounded bythe.

ambient air of the room. Also, in thislposition, the Spr s y-yaccessible without having to move th ..stove andin so. doingdisconnectthe. gaspipes, ,etc.

The spring Misconnected atits opposite ends 4-'|.to the. arms W of thethreearmed-leverstfi; These threenarmed levers are provided with up:-wardly extending. arms- 50: which are pivoted, about horizontal apivotpins 52 carriedibybrack ets 5Q securedto 1orforming Y of ,thestove. Thethree armedilevers Mare-also: provided with. arms :56- which-are pivotedtOhthB. lower en-ds of the hangersAfi; seat 58;: It will be noted thatthe three --arn'-ied- 'levers 1 48are so constructed 5 that the arms eiithereof are-longer than=the arms A t-and and of the' arms 56 areremote'rrom the. pivotzpoints. 5U; thereby imparting afcertain amount of"me- 50 ch nical" advantage. Also, it will 1 be further notedthat'thethree armed levers were so arranged that, when the door isclosed as in Fig. 1, the points at which the ends of the spring areconnected to the arms 46 are in substantial vertical alignmentiewith thepivot points 52.

part of the'rhousingrr that the, pivots 58- Operation When the oven dooris closed, as in Figs. 1 and 2, the spring 44 is almost, but not quite,fully contracted, the pivot points 58 of the hangers 40 are in theirlowest positions, and the ends 41 of the spring are substantiallydirectly below the pivot points 52 of the three armed levers 48, asindicated by the line A. In this position, the spring exerts a uniformclosing pressure on the opposite ends of the door, the pressure of thespring being relatively small but suflicient to insure tight closing ofthe door against its frame. Since the structure and operation ofthemounting means on opposite sides of the door are identical, only theoperation of the structure on the right-hand side of the oven door willbe described.

As the oven door is opened, the lever 22 and the bent link 34 are movedupwardly and outwardly, thus pulling up on the hanger 40 against theaction of the spring 44. If the door is opened only to about the extentshown in Fig. 4, the ends 41 of the spring will move only from the lineA to the line B. In other words, the spring is stretched very little andwill, therefore, close the oven door relatively gently. The reason forthis reduced stretching of the spring lies in the structure of the threearmed levers 48 and the relation of the arms 46 and 56 thereof to eachother and to the pivot point 52. For example, be-, cause ofthe lengthand position of the arm 56 relative to the arm 46, the pivot point 58will move upwardly from the line A to the line B, or about twice thedistance between the lines A and B. Thus, the stretching of the springis minimized in relation to the movement of the hanger in response toopening of the door. Also, in this position, the center of gravity ofthe oven door is still relatively close to the vertical plane of thedoor opening, so that even the relatively small force of the slightlystretched spring is enough to move the door to closing position but, asstated, the door is moved relatively gently. It is also to be noted thatin the position shown in Fig. 4, the bent link 34 has just come incontact with, but has not begun to exert any pressure against the lug 42on the portion 28 of the lever 22. There is, therefore, no extraneousforce to interfere with the closing of the door by the spring.

When the door is opened beyond the position shown in Fig. 4, as forexample, to the position shown in Fig. 6, the center of gravity of thedoor is further removed from the vertical plane of the door opening andthe bent link 34 engages and presses down on the lu 42. The weight ofthe door overcomes the force of the spring, so that the door remains inopen position but is prevented from falling to the position of Fig. 8 bythe spring 44. In other words, the door is balanced. Again it will benoted that, while the spring has been further stretched a distance equalto the distance between the lines B and C, the pivot point 58 has movedupwardly from the positionindicated by the line B to the positionindicated by the line C, or about twice the distance from the line B tothe line C. The same is true when the oven door is fully opened, asshown in Fig. 8, in which engagement of the hook 36 with the stop 32prevents further movement of the door. Fully opening the door stretchesthe spring a distance equal to the space between the lines C and D,while the pivot 58 is moved upwardly from the position indicated by theline C to the position indicated by the line D, or abouttwice thedistance between the lines C and D.

It will be noted that, due to the arrangement of the arms 46 and 56 andtheir relationship to the pivot 52, the length of the spring need beonly equal to the distance between the lower arms 46 when the door isclosed, which distance is considerably less than the width of the door.This is due to the length of the arms 56, the ends of which extend tothe vertical planes of the hangers at the opposite sides of the door, aswill be een from Fig. 1.

From the foregoing it will be seen that, by my construction, not only ashorter spring can be used but that, due to the minimized stretching ofthe spring as the door is opened, the life of the spring is greatlyincreased.

What I claim is:

1. The combination with a range structure defining an oven compartmenthaving a front access opening, a door for closing said opening, andhinge means for mounting said door for rotation about a horizontal axisin closing or opening direction, of means for urging said door inclosing direction when said door is moved in opening direction to apredetermined point, and for retaining said door in any position towhich it is moved beyond said point, said means including bent linkspivotally connected, at their upper ends, to said door, rigid hangersdisposed parallel to and adjacent the sides of said door with the upperends of said hangers connected to the lower ends of said bent links andwith the lower ends of said hangers disposed below said oven compartmentin all positions of said door, a pair of levers, said levers havingupper relatively short arms pivoted to said structure at points belowsaid oven compartment and inwardly spaced from the vertical planes ofsaid hangers, whereby said levers are rotatable about horizontal axesnormal to the axis of rotation of said door, said levers furtherincluding lower relatively short arms disposed in substantially thevertical planes of said upper arms, and horizontal arms disposedsubstantially midway between the ends of said upper and lower arms andextending outwardly to the vertical planes of said hangers, the outerends 'of said horizontal arms being connected to the lower ends of saidhangers, and a horizontally-disposed spring connected to the ends ofsaid lower arms for resisting rotation of said levers.

2. The structure recited in claim 1 in which the horizontal arms of saidlevers are so related to said upper and lower arms and to the pivotpoint of said levers that the movement of the outer ends of saidhorizontal arms is about twice as extensive as the movement of the lowerends of P said lower arms so that said spring is stretched andcontracted to a relatively small extent as compared with the movement ofsaid door in opening or closing direction.

GUSTAV KLEIN.

